title: Static and dynamic model fluorescence quenching of laser dye by carbon tetrachloride in binary mixtures.
abstract: The fluorescence quenching of laser dye namely 4,4(‴)-Bis (2-butyloctyl-oxy)-p-quaterphenyl [BIBUQ] by carbon tetrachloride has been studied in different solvent mixtures of 1-4 dioxane (DN) and acetonitrile (AN) at room temperature. The quenching is found to be appreciable and a positive deviation from linearity was observed in the Stern-Volmer plot in all the solvent mixtures. Various parameters for the quenching process have been determined by sphere of action static quenching model and finite sink approximation model. The magnitudes of these rate parameters indicate that positive deviation in the Stern-Volmer (S-V) plot is both due to static and dynamic processes.
authors.affiliation: Department of Physics, Karnatak University, Dharwad 580003, Karnataka, India.
authors.forename: J S
authors.initials: JS
authors.lastname: Kadadevarmath
authors.forename: G H
authors.initials: GH
authors.lastname: Malimath
authors.forename: R M
authors.initials: RM
authors.lastname: Melavanki
authors.forename: N R
authors.initials: NR
authors.lastname: Patil
mesh_terms: D000097:Acetonitriles / Q000737:chemistry*; D002251:Carbon Tetrachloride / Q000737:chemistry*; D004146:Dioxanes / Q000737:chemistry*; D005453:Fluorescence; D054025:Lasers, Dye; D008958:Models, Molecular; D013050:Spectrometry, Fluorescence; D013876:Thiophenes
chemical_list: D000097:Acetonitriles; D004146:Dioxanes; D013876:Thiophenes; D002251:Carbon Tetrachloride; C025223:1,4-dioxane; C032159:acetonitrile
keywords: Diffusion limited; Finite sink approximation model; Fluorescence quenching; Laser dye; Static and dynamic quenching